A one-hit-wonder Disco Queen - in a moment of mental abstraction and political madness – becomes Governor General of Canada. Wild, wicked and sometimes just plain daft, Rideau Hall tracks the missteps, misalliances and mayhem that lay in the wake of one desperately needy woman set loose on Parliament Hill. Brash, over-the-top Regina Gallant, has thrown the Vice-Regal mantel over her sequined lycra blouse and is reaching, one last time, for her place in the firmament.